If your levels are already normal, a shot will give you little more than a small, short-lived lift, and we will tell you that honestly
Patients taking certain medications (e.g., chloramphenicol may reduce the effectiveness of B12 therapy) or with risk factors for B12 deficiency (metformin use, proton pump inhibitors, nitrous oxide exposure, vegan diet) should discuss these with their healthcare provider
B12 shot also produces red blood cells necessary for the nervous system to function correctly
Nutritional deficiency occurs when the body is unable to absorb or get enough nutrients from food
However, these differences did not reach statistical significance owing to the limited number of studies
While to drink or not to drink is a personal choice, do you know that alcohol as a whole also disrupts your vitamin absorbing capacity